很多运河是按照地图上的坐标线开凿的。Many canals were built along map grid lines.介绍了热熔型道路标线涂料的组成及其施工方法.Composition and application of thermoplastic marking paint are introduced.初学游泳者不得进入深水区,携带救生圈不得超越浅水区标线进入深水区.Beginners or swimmers wearing...
他用尽全力拉减轻了重量的雪橇。He pulled the lightened sled with all his strength.他们造了一台能吊起150吨重量的吊车.They built a crane capable of lifting 150 tons.所有有重量的物质都不断地处于运动中，贯穿空间。All ponderable bodies are constantly in motion in through space....
The holes were sufficiently large to serve as nests.这些洞作鸟巢足够大。The birds returned to their nests and continued to incubate the eggs.鸟儿回到巢里继续孵卵。It is best to stifle curiosity and leave birds' nests alone.最好能克制住好奇心，不要去...